Section 124E(3) in The Maharashtra Regional and Town Planning Act, 1966
(3)The amount of Development charge as shown in the notice of assessment shall be paid within thirty days of the date of receipt thereof by such person and where the amount has not been so paid or has been partly paid an interest at, the rate of eighteen per cent. per annum upon any amount outstanding shall be payable from the date immediately following the date on which the period of thirty days as aforesaid expires till the date of payment of such amount.